Commits
David Farler committed e930494f35c
Don't copy ring buffer in SequenceType.suffix If the start of the ring buffer is aligned at the left, just wrap the whole thing directly in an AnySequence and return it. Otherwise, return a lazy concatenation of the the two slices of the ring buffer. This prevents a forced full copy of the result. rdar://problem/21885925 Swift SVN r30374